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Author(s): Marchal, Paul
Publication Date: 1916.
Publisher(s): Librairie Lhomme
Contributor(s): Biodiversity Heritage Library
Collection(s): Biodiversity Heritage Library
Category: Others
Subject(s): Plant diseases , Beneficial insects , Insect pests , Agriculture--United States , United States.--Dept. of Agriculture
Keywords: United States. Dept. of Agriculture Beneficial insects Insect pests Agriculture United States Plant diseases